While the original Geforce Rtx 4070 used the AD104 GPU for the RTX 4070, it now appears that versions of the RTX 4070 with a cut-down AD103 GPU are already selling in the market. The higher-end AD103 GPU was used in the original RTX 4080 with 76 enabled Stream Multiprocessors (SMs) and the RTX 4070 Ti, where it had 66 SMs enabled. Nvidia has recently started using the same GPU for the RTX 4080 SUP